When Swamp Reef enters the battlefield, return a land you control to its owner's hand.
: Add to your mana pool. Activate this ability only if you control a Swamp.
: Add to your mana pool. Activate this ability only if you control an Island.
Shadow
: Add 
to your mana pool. Activate this ability only if you control a Swamp.: Add 
to your mana pool. Activate this ability only if you control an Island.
